you can use git filter-branch … --all to filter all branches and tags
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knittlAug 15 '11 at 15:41

you're right, I'll give that a try. I'm very interested to know if there is a way to do this in svn2git during that process though. Everything seems cleaner when you get it right the first time, rather than rewriting the history afterwards.
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William DennissAug 15 '11 at 15:56